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HCF Worksheet

Vedic maths trick 36: HCF by subtraction · Set 908 · 40 sums
TalentJR

The trick (Sankalana-Vyavakalanabhyam): Take the smaller number away from the bigger one, as many times as it goes. Now use the smaller number and what is left. Repeat until nothing is left: the last number before 0 is the HCF.

NameDateTime takenScore ___ / 40
  1. 1.HCF of 247 and 65 =
  2. 2.HCF of 285 and 133 =
  3. 3.HCF of 4 and 14 =
  4. 4.HCF of 120 and 130 =
  5. 5.HCF of 195 and 91 =
  6. 6.HCF of 110 and 286 =
  7. 7.HCF of 221 and 234 =
  8. 8.HCF of 88 and 56 =
  9. 9.HCF of 119 and 77 =
  10. 10.HCF of 425 and 150 =
  11. 11.HCF of 78 and 120 =
  12. 12.HCF of 140 and 154 =
  13. 13.HCF of 272 and 144 =
  14. 14.HCF of 108 and 120 =
  15. 15.HCF of 100 and 360 =
  16. 16.HCF of 60 and 108 =
  17. 17.HCF of 420 and 399 =
  18. 18.HCF of 242 and 88 =
  19. 19.HCF of 272 and 304 =
  20. 20.HCF of 480 and 72 =
  21. 21.HCF of 184 and 437 =
  22. 22.HCF of 38 and 12 =
  23. 23.HCF of 192 and 112 =
  24. 24.HCF of 216 and 60 =
  25. 25.HCF of 91 and 21 =
  26. 26.HCF of 114 and 72 =
  27. 27.HCF of 20 and 190 =
  28. 28.HCF of 300 and 80 =
  29. 29.HCF of 72 and 128 =
  30. 30.HCF of 110 and 396 =
  31. 31.HCF of 30 and 55 =
  32. 32.HCF of 119 and 105 =
  33. 33.HCF of 102 and 48 =
  34. 34.HCF of 234 and 306 =
  35. 35.HCF of 52 and 143 =
  36. 36.HCF of 40 and 88 =
  37. 37.HCF of 272 and 51 =
  38. 38.HCF of 252 and 90 =
  39. 39.HCF of 128 and 304 =
  40. 40.HCF of 32 and 40 =

Answer key

  1. 13
  2. 19
  3. 2
  4. 10
  5. 13
  6. 22
  7. 13
  8. 8
  9. 7
  10. 25
  11. 6
  12. 14
  13. 16
  14. 12
  15. 20
  16. 12
  17. 21
  18. 22
  19. 16
  20. 24
  21. 23
  22. 2
  23. 16
  24. 12
  25. 7
  26. 6
  27. 10
  28. 20
  29. 8
  30. 22
  31. 5
  32. 7
  33. 6
  34. 18
  35. 13
  36. 8
  37. 17
  38. 18
  39. 16
  40. 8

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